<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			//字符串转数组splict
//			var str="后盾人a后盾网a后盾论坛a后盾it教育";
//			var re=str.split('a');
//			document.write(re);
			//大小写转换
			var str='HouDunRen';
			//toUpperCase()转成大写
			//var re=str.toUpperCase();
			//转成小写toLowerCase()
			var re=str.toLowerCase();
			document.write(re);
		</script>
	</head>
	<body>
	</body>
</html>
